2x^2=2x+7

Simple and best practice solution for 2x^2=2x+7 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 2x^2=2x+7 equation:


Simplifying
2x2 = 2x + 7

Reorder the terms:
2x2 = 7 + 2x

Solving
2x2 = 7 + 2x

Solving for variable 'x'.

Reorder the terms:
-7 + -2x + 2x2 = 7 + 2x + -7 + -2x

Reorder the terms:
-7 + -2x + 2x2 = 7 + -7 + 2x + -2x

Combine like terms: 7 + -7 = 0
-7 + -2x + 2x2 = 0 + 2x + -2x
-7 + -2x + 2x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
-7 + -2x + 2x2 = 0

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
-3.5 + -1x + x2 = 0

Move the constant term to the right:

Add '3.5' to each side of the equation.
-3.5 + -1x + 3.5 + x2 = 0 + 3.5

Reorder the terms:
-3.5 + 3.5 + -1x + x2 = 0 + 3.5

Combine like terms: -3.5 + 3.5 = 0.0
0.0 + -1x + x2 = 0 + 3.5
-1x + x2 = 0 + 3.5

Combine like terms: 0 + 3.5 = 3.5
-1x + x2 = 3.5

The x term is -1x.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1x + 0.25 + x2 = 3.5 + 0.25

Reorder the terms:
0.25 + -1x + x2 = 3.5 + 0.25

Combine like terms: 3.5 + 0.25 = 3.75
0.25 + -1x + x2 = 3.75

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = 3.75

Calculate the square root of the right side: 1.936491673

Break this problem into two subproblems by setting 
(x + -0.5) equal to 1.936491673 and -1.936491673.

Subproblem 1

x + -0.5 = 1.936491673 Simplifying x + -0.5 = 1.936491673 Reorder the terms: -0.5 + x = 1.936491673 Solving -0.5 + x = 1.936491673 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 1.936491673 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 1.936491673 + 0.5 x = 1.936491673 + 0.5 Combine like terms: 1.936491673 + 0.5 = 2.436491673 x = 2.436491673 Simplifying x = 2.436491673

Subproblem 2

x + -0.5 = -1.936491673 Simplifying x + -0.5 = -1.936491673 Reorder the terms: -0.5 + x = -1.936491673 Solving -0.5 + x = -1.936491673 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -1.936491673 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -1.936491673 + 0.5 x = -1.936491673 + 0.5 Combine like terms: -1.936491673 + 0.5 = -1.436491673 x = -1.436491673 Simplifying x = -1.436491673

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.436491673, -1.436491673}

See similar equations:

| -(p+9)x=x^2+8p+12 | | X^2+x+9=3-4x | | x=.04*1329401 | | 26/x=12/2 | | -(p-9)x=x^2+8p+12 | | 3x^2-18x+0.03=0 | | 1/2y=x=3 | | 3/2n-15/4n | | 2(3)+18= | | -5(3)-3= | | 3Z+62=60-Z | | r-1/3-8/5=22/5 | | -4=-11-5 | | x=230+.07 | | 12x-12=40 | | 16-2n-58n=65 | | 5(17)/103 | | 5x/y^2=2y/7x | | 7.6=2(n+5.7) | | 4sinx=4cosx | | 1/3-8/5 | | 4v+5v=81 | | 40-9=5a | | 1/318/5 | | K/12=5/6 | | -5.5=6.5-4y | | 12w-5w=49 | | 3-4q= | | 0.2(y+2)=4 | | 7a+5b+0.5c=100 | | 11b^2-36b-32=0 | | 12/5x-2x=3/9 |

Equations solver categories